... preparation for production area 生产准备区 production per unit area 单位面积的生产量 Production Area Manager 生产区域经理 ...
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通过研究3个玉米杂交种成熟过程中籽粒蛋白质及几种氨基酸的变化表明：玉米在腊熟后期至成熟籽粒的粗蛋白含量和单位面积生产量较高。
The results obtained from 3 hybrids of maize showed there were higher content and yield of protein in grains from the late stage or wax ripeness to maturity stage.
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